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Author Topic: No squawk alert  (Read 1911 times)

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yang

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No squawk alert
« on: December 19, 2016, 05:17:05 AM »
My ANRB received one aircraft which mode-s code is 19999B and squawk is 7700. I have received the mode-s alert but not received the squawk alert. I am sure that the mode-s code 19999B and squawk code 7700 both are in my alert list. Why no 7700 alert? Does anyone know what's the problem?

Thank you.

Yang